Sorry, we don't support Internet Explorer Version 8 or below. Please consider upgrading your browser, or switching to Chrome or Firefox. Having issues? Contact our web team at webmaster@onsetcomp.com.

COVID-19, effective 5/10/2020

Onset continues to monitor the latest coronavirus developments and guidance from local authorities, the Centers for Disease Control, and the World Health Organization. The health and well-being of our customers, suppliers, employees, and the surrounding community is of the utmost importance to us, so we are taking the necessary precautions to keep everyone safe.

At this time, Onset’s ability to build our products and ship them to our customers as scheduled has not been affected by the coronavirus situation. We are taking proactive measures to work with our suppliers to identify and mitigate any potential supply chain disruptions and will continue to provide updates in the future, as needed.

These products are made with 316 Stainless Steel and are resistant to corrosion in most circumstances. However, 316 Stainless Steel is susceptible to crevice corrosion when deployed in salt water, buried in mud or other substances, or when in contact with dissimilar metals. In these environments 316 Stainless Steel will eventually corrode, allowing water to enter and damage the electronics. The speed at which crevice corrosion occurs is dependent upon temperature and flow. In warm stagnant salt water or mud environments, the corrosion can start within hours and cause a leak in a month or less. In colder, faster-flowing environments, a leak may occur within six months. We recommend that you do not deploy stainless steel loggers in these types of environments.

The Titanium version of the U20 logger is ideal for use in salt water. Spending the extra $240 for Titanium U20 loggers will be justified the first time you do not destroy a $500 stainless logger by saltwater crevice corrosion.

Place the stainless steel logger in a sturdy protective pouch filled with fresh water (or compatible fluid like propylene glycol). The pressure and temperature inside the protective bag will equalize with the surrounding water. Be sure that there is no air in the bag by submerging both the bag and logger in a bucket of fresh water as you seal the bag.

This method is risky for two reasons:

If the bag ever leaks, salt water will destroy your stainless steel logger